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    How to set up calculations based on a Matrix field inputs

    Asked by SMFSNCU on October 09, 2015 at 06:39 AM

    The date fields for columns would be dollar value with total across with a final column to the right that would add line totals.


    Also from on the Personal Car field in Travel and Expense I need a formula that calculates the mileage entered from Travel information x0.575

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    JotForm Support

    Answered by david on October 09, 2015 at 12:03 PM


    I checked your most recent form and it looks like you are still using Matrices rather than the Spreadsheet widget:


    I believe my colleague explained the setup of the widget in your previous thread.

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    Answered by SMFSNCU on October 09, 2015 at 02:45 PM
    Sorry but I don’t understand the google spreadsheet. This seem cumbersome.
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    JotForm Support

    Answered by Mike on October 09, 2015 at 05:18 PM

    Alternatively, you might try conditional calculations with 'UPDATE / CALCULATE FIELD’S VALUE' conditional logic rules on form.

    Here is an example for one Matrix row.

    Note, that you will need to set calculation condition for each row.

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    Answered by SMFSNCU on October 12, 2015 at 10:45 PM
    Can you assist me with this please.
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    JotForm Support

    Answered by Welvin on October 13, 2015 at 12:55 AM

    1. Edit your form

    2. Click "Conditions" in the toolbar


    3. Setup your conditions:

    a. Set your Rule and click the "Add Field" button:

    b. Select the Matrix field. For example, the travel expenses matrix:

    c. Click "Show Headers" and select the options in a row that you would like to calculate except the Totals column then click "Insert" button:


    d.  Add + after each option. For example:


    d. Select the Output To Field. In this example, I have selected the same matrix which is the "Trave Expenses". You have to select the last option in the row which is the total column:


    That's it. Repeat the same for the other matrices.